<template>
  <div class="wrapper" ref="wrapper">
    <div class="content">
      <slot></slot>
    </div>
  </div>
</template>

<script>
  import  BScroll from  'better-scroll'

export default {
  name: "Scroll",
  props:{
    probeType:{
      type:Number,
      default: 0
    },
    pullUpLoad:{
      type:Boolean,
      default: false
    }
  },
  data(){
    return{
      scroll: null,

    }
  },
  mounted(){
    //创建BScroll对象
    this.scroll = new BScroll(this.$refs.wrapper,{
      click:true,
      mouseWheel:true,
      observeDOM:true,
      probeType: this.probeType,
      pullUpLoad: this.pullUpLoad
    })
    //2.监听滚动的位置
    if(this.probeType === 2 || this.probeType === 3){
      this.scroll.on('scroll',(position) =>{
        // console.log(position);
        this.$emit('scroll',position)
      })
    }
    //3.监听scroll滚动到底部
    if(this.pullUpLoad){
      this.scroll.on('pullingUp',()=>{
        // console.log('监听到滚动到底部')
        this.$emit('pullingUp')
      })
    }
  },

  methods:{
    scrollTo(x,y,time=300){
      this.scroll && this.scroll.scrollTo(x,y,time)
    },
    refresh(){
      // console.log('-----');
      this.scroll &&  this.scroll.refresh()
    },
    finishPullUp(){
      this.scroll && this.scroll.finishPullUp()
    }
  }
}
</script>

<style scoped>

</style>